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| author | Srinivas Pandruvada <[email protected]> | 2015-10-15 19:34:21 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <[email protected]> | 2015-10-15 20:46:33 +0000 |
| commit | 8e601a9f97a00bab031980de34f9a81891c1f82f (patch) | |
| tree | 9116b294513ac173b61dffe4c8daa05802072d68 /drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | |
| parent | Linux 4.3-rc5 (diff) | |
| download | kernel-8e601a9f97a00bab031980de34f9a81891c1f82f.tar.gz kernel-8e601a9f97a00bab031980de34f9a81891c1f82f.zip | |
cpufreq: intel_pstate: Fix divide by zero on Knights Landing (KNL)
This is a workaround for KNL platform, where in some cases MPERF counter
will not have updated value before next read of MSR_IA32_MPERF. In this
case divide by zero will occur. This change ignores current sample for
busy calculation in this case.
Fixes: b34ef932d79a (intel_pstate: Knights Landing support)
Signed-off-by: Srinivas Pandruvada <[email protected]>
Acked-by: Kristen Carlson Accardi <[email protected]>
Cc: 4.1+ <[email protected]> # 4.1+
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_object.c')
0 files changed, 0 insertions, 0 deletions